WO2024034481A1

WO2024034481A1 - Stereoscopic display device

Info

Publication number: WO2024034481A1
Application number: PCT/JP2023/028195
Authority: WO
Inventors: 優斗小林; 紀晃高橋; 英之市橋; 孝明鈴木; 晴香三森; 貴史野元
Original assignee: ソニーグループ株式会社
Priority date: 2022-08-10
Filing date: 2023-08-01
Publication date: 2024-02-15

Abstract

A stereoscopic display device comprising a stereoscopic display and a frame which is disposed with an offset with respect to the display surface of the stereoscopic display in a viewing direction perpendicular to the display surface, the frame overlapping at least part of the outer edges of the stereoscopic display as viewed from the viewing direction, and blocking the image on the stereoscopic display.

Description

stereoscopic display device

The present invention relates to a stereoscopic display device.

Conventionally, a light distribution member such as a lenticular lens or a parallax barrier placed on a display device such as a liquid crystal panel imparts directionality to light rays emitted from pixels, thereby providing viewers with a stereoscopic display using parallax images. Stereoscopic displays are known.

Incidentally, it is known that when a stereoscopic image projected and displayed in front of the display surface of a stereoscopic display overlaps the viewing angle of the stereoscopic display, parallax inconsistency and stereoscopic misalignment occur. Furthermore, when parallax inconsistency or stereoscopic misalignment occurs, the viewer viewing the stereoscopic video may feel unnatural, tired, or 3D motion sickness, and may not be able to view the stereoscopic video comfortably.

In order to eliminate at least one of parallax contradiction and stereoscopic misalignment, a technique has been proposed that presents a predetermined frame image that can be viewed stereoscopically at the peripheral area based on the amount of parallax (see, for example, Patent Document 1). Alternatively, a technique has been proposed in which an object is moved according to the viewing distance from the stereoscopic display to the object (see, for example, Patent Document 2). Furthermore, a technique has been proposed for controlling parallax information or scaling factors of a left-eye image and a right-eye image when the observation distance is outside the fusion limit (see, for example, Patent Document 3).

Japanese Patent Application Publication No. 2010-268097 Japanese Patent Application Publication No. 2013-178727 Japanese Patent Application Publication No. 2012-44308

The above-mentioned conventional techniques are intended for content in which the position or composition of a stereoscopic object can be arbitrarily changed, and are difficult to apply suitably to content in which it is undesirable to change the position or composition. For example, issues still remain regarding stereoscopic display for live-action remote communication.

Therefore, the present disclosure proposes a stereoscopic display device that solves at least part of the parallax contradiction and stereoscopic misalignment.

According to the present disclosure, the stereoscopic display is arranged to have an offset with respect to the display surface in a viewing direction perpendicular to the display surface of the stereoscopic display, and an outer edge of the stereoscopic display when viewed from the viewing direction. A stereoscopic display device is provided, comprising: a frame that is arranged to overlap at least a portion of the stereoscopic display and blocks an image of the stereoscopic display.

FIG. 3 is a diagram for explaining parallax contradiction and stereoscopic mismatch. FIG. 3 is a diagram for explaining distortion of a stereoscopic image caused by a difference between a shooting position of a stereo camera and a viewer's viewpoint position. FIG. 3 is a diagram for explaining the relationship between FOV (Field of View) and distortion of a stereoscopic image. FIG. 3 is a diagram for explaining congestion adjustment contradiction. FIG. 3 is a diagram for explaining the relationship between the viewing distance of a stereoscopic display and the display range of stereoscopic video that can be comfortably viewed by a viewer. 1 is a diagram illustrating a configuration example of a stereoscopic display device according to an embodiment of the present disclosure. FIG. 3 is a side view of the stereoscopic display device according to the same embodiment. FIG. 2 is a plan view of a stereoscopic display device according to the same embodiment. FIG. 3 is a side view of the stereoscopic display device according to the same embodiment.

Below, embodiments of the present disclosure will be described in detail based on the drawings. In addition, in each of the following embodiments, the same portions are given the same reference numerals and redundant explanations will be omitted.

(Embodiment)
[1. Introduction]
First, problems when viewing stereoscopic images displayed on a stereoscopic display will be explained using FIGS. 1 to 5.

FIG. 1 is a diagram for explaining parallax contradiction and stereoscopic mismatch. FIG. 1 shows a case where a display object (hereinafter also referred to as a stereoscopic image) O11 is displayed so as to protrude toward the front side of the display surface of the stereoscopic display 10. In FIG. 1, a case will be described in which the stereoscopic image O11 is a person.

The center diagram in FIG. 1 is a diagram for explaining parallax contradiction. In the center diagram of FIG. 1, the stereoscopic image O11 appears to be in front of the display screen for the viewer, but the image frame F1 of the stereoscopic display 10 is visible behind the stereoscopic image O11, so the viewer may notice a parallax contradiction. Indicates when you feel it. Here, people have common sense that objects located in the back should be hidden (not visible) by objects located in the front. Therefore, originally, for the viewer, the image frame F1 located at the back is hidden by the stereoscopic image O11 located at the front and cannot be seen. Therefore, the viewer feels a parallax contradiction.

The diagram on the right side of FIG. 1 is a diagram for explaining steric mismatch. In the diagram on the right side of Figure 1, the viewer sees the 3D image O11 in front of the display screen, but because the 3D image O11 is cut off in the middle of the body, the body is in the space where the body of the 3D image O11 should be. This shows a case where the viewer feels a stereoscopic misalignment because the image frame F2 of the stereoscopic display 10 is visible instead.

FIG. 2 is a diagram for explaining the distortion of stereoscopic video caused by the difference between the shooting position of the stereo camera and the viewer's viewpoint position. The camera only needs to be able to acquire images from a plurality of viewpoints for stereoscopic viewing, and three or more cameras may be used. An example in which the camera is a stereo camera will be described below. The diagram on the left side of FIG. 2 shows when a stereoscopic image is captured by a stereo camera. The thin double-ended arrow shown in the left side of FIG. 2 indicates the distance (shooting distance) between the stereo camera and the subject O2 at the time of shooting. Further, the diagram on the left side of FIG. 2 shows a situation where the stereo camera is in front of the subject.

The center diagram and the right diagram in FIG. 2 show the viewing of the stereoscopic video photographed in the left diagram in FIG. 2. The thin double-ended arrow shown in the center diagram of FIG. This indicates that the distance (hereinafter also referred to as shooting distance) is the same. Further, the center diagram in FIG. 2 shows that the viewer's viewpoint position is in front of the stereoscopic image O21. At this time, the viewer perceives the stereoscopic image O21 displayed by the stereoscopic display 10 with correct stereoscopic effect. On the other hand, the thin double-ended arrow and thick double-ended arrow shown in the right-hand diagram of FIG. 2 indicate that the viewing distance and the photographing distance do not match. Furthermore, the diagram on the right side of FIG. 2 shows how the viewer's viewpoint position is shifted from the front with respect to the stereoscopic image O21. At this time, the viewer cannot perceive the stereoscopic image O21 displayed by the stereoscopic display 10 with correct stereoscopic effect, so the stereoscopic image O21 appears distorted.

FIG. 3 is a diagram for explaining the relationship between FOV (Field of View) and distortion of stereoscopic images. In Figure 3, even if the sense of size of the subject is the same when shooting a 3D image and when viewing a 3D image, if the viewing distance and shooting distance do not match, the 3D image will appear distorted to the viewer. Show the situation. FIG. 3 shows that when the value of FOV is 1, the viewing distance and the shooting distance match, and the viewer can perceive a stereoscopic image showing a woman's face with correct stereoscopic effect. Furthermore, as the FOV value increases, such as 10, 20, ..., 50, the viewing distance and shooting distance become smaller, making it difficult for the viewer to perceive a 3D image showing a woman's face with correct 3D effect. This shows how the three-dimensional image appears distorted.

FIG. 4 is a diagram for explaining congestion adjustment contradiction. First, convergence distance and focal length will be explained. When looking at nearby objects, people look with their eyes crossed, and when looking at distant objects, they look with their eyes far apart. This eye adjustment is called "convergence." Also, the distance from the eye to the object is called the "convergence distance." In addition, when a person looks at a nearby object, the lens of the eye becomes thicker, and when a person looks at a distant object, the lens of the eye becomes thinner. The lens has the function of adjusting the focus of the eye in this way, and the distance it takes to focus is called the "focal length."

The diagram on the left side of FIG. 4 shows how a viewer views a two-dimensional image displayed on a display. Viewing two-dimensional images is also called natural viewing. When viewing a two-dimensional video, the convergence distance and focal length both match the distance from the viewer's viewpoint to the display.

The diagram on the right side of FIG. 4 shows how a viewer views a three-dimensional image (stereoscopic image) displayed on a display. Viewing three-dimensional images is also called stereoscopic viewing. When viewing a three-dimensional video, the focus is on the surface of the display on which the video is displayed, so the focal length matches the distance from the viewer's viewpoint to the display. On the other hand, since the convergence is adjusted to the plane on which the stereoscopic image is formed, for example, if the stereoscopic image is displayed in front of the display, the convergence distance will be shorter than the focal length. Therefore, when viewing a three-dimensional video, the convergence distance and focal length do not match. It is known that such a discrepancy between the convergence distance and the focal length when viewing a three-dimensional image may cause the viewer to feel fatigue such as eye strain or three-dimensional motion sickness.

FIG. 5 is a diagram for explaining the relationship between the viewing distance of a stereoscopic display and the display range of stereoscopic video that the viewer can comfortably view.

The diagram on the left side of FIG. 5 shows the viewing distance Z, which is the distance from the viewer's viewpoint position to the stereoscopic display, and the range D, in which a stereoscopic image projected and displayed on the near side of the stereoscopic display can be comfortably viewed. This shows the relationship with a range D' in which a stereoscopic image that is displayed retracted to the back of a stereoscopic display can be comfortably viewed. Range D and range D' are also referred to as comfort ranges. For example, when Z is 1 m, D is approximately 0.23 m, and D' is approximately 0.43 m. The maximum protrusion distance D, which will be described later, is the same as the range D in which a stereoscopic image projected and displayed on the front side of the stereoscopic display can be comfortably viewed.

The diagram on the right side of FIG. 5 is a diagram for explaining the relationship between vergence distance and focal distance. The horizontal axis of the graph on the right side of FIG. 5 indicates vergence distance. Further, the vertical axis of the graph on the right side of FIG. 5 indicates focal distance. The graph on the right side of FIG. 5 shows that the comfortable range for the reciprocal D of the viewing distance Z is ±0.3 (1/m). For example, if Z is 1 m, the comfort range is D+0.3=1.3 (1/m) and D-0.3=0.7 (1/m). Converting this into distance, D is 0.23 m and D' is 0.43 m.

[2. Configuration of stereoscopic display device]
Next, the configuration of a stereoscopic display device according to an embodiment of the present disclosure will be described using FIGS. 6 to 9.

FIG. 6 is a diagram illustrating a configuration example of a stereoscopic display device according to an embodiment of the present disclosure. As shown in FIG. 6, the stereoscopic display device 100 includes a stereoscopic display 110, a frame 120, and a protrusion 130.

The stereoscopic display 110 is a display device that displays stereoscopic images. The stereoscopic display 110 has a display surface 100A composed of a liquid crystal panel, an OLED (Organic Light Emitting Diode) panel, or the like. In FIG. 6, the stereoscopic display 110 is a so-called autostereoscopic display that allows the viewer V1 to view stereoscopically without wearing special glasses or the like.

The frame 120 is arranged to hide the image frame of the stereoscopic display 110. Here, the image frame of the stereoscopic display 110 may include an outer frame of the stereoscopic display 110. Further, the image frame of the stereoscopic display 110 may include a frame-shaped image displayed on the display surface 110A along the outer frame of the stereoscopic display 110.

Further, the frame 120 is arranged so as to have an offset with respect to the display surface 110A of the stereoscopic display 110 in a viewing direction (hereinafter also simply referred to as "viewing direction") perpendicular to the display surface 110A. Specifically, the frame 120 is a stereoscopic display 110 in which the distance Fd between the display surface 110A and the frame 120 is set based on the display range of stereoscopic video that the viewer can comfortably view as described in FIG. It is placed at a position where the distance is greater than or equal to the maximum protrusion distance D. Here, the maximum pop-out distance D is a distance set as the maximum distance in the viewing direction from the display surface 110A to the stereoscopic image.

Further, the frame 120 is arranged so as to overlap at least a portion of the outer edge of the stereoscopic display 110 when viewed from the viewing direction, and blocks the image of the stereoscopic display 110. In FIG. 6, the frame 120 is arranged to overlap the bottom, right, and left picture frames of the stereoscopic display 110, and blocks the bottom, right, and left picture frames of the stereoscopic display 110.

Further, the material of the frame 120 may be any material as long as it can play the role of hiding the image frame of the stereoscopic display 110. For example, the frame 120 may be made of a plate or rod made of metal or resin. Further, the frame 120 does not necessarily need to completely block light, but may absorb or diffuse light to such an extent that the image frame cannot be seen. For example, the frame 120 may be constructed of a semi-transparent colored material, an optical diffuser plate such as frosted glass or a lens array, or an optical diffuser bar.

Furthermore, as a method for fixing the frame 120 to the stereoscopic display 110, the outer periphery may be supported by a solid material such as metal, resin, or glass. Additionally, frame 120 may be removable from stereoscopic display 110 when not in use. For example, the frame 120 may be supported around its periphery by fixable and removable means such as screws, magnets, or clips.

The protrusion 130 is arranged to physically limit the viewing distance of the viewer V1 to the optimal viewing distance. The protrusion 130 is arranged to create a physical distance in the viewing direction between the display surface 110A and the viewer V1 located in the viewing direction. Here, the optimal viewing distance is the distance from the display surface 110A of the stereoscopic display 110 to the viewer's viewpoint position, and is a distance at which the viewer can comfortably view stereoscopic video. For example, in the stereoscopic display 110 of a lenticular type or a parallax barrier type, the optimum viewing distance is determined by the width of the slit and the distance from the panel.

Furthermore, the protruding portion 130 is arranged so as to protrude toward the viewer in the viewing direction perpendicular to the display surface 110A of the stereoscopic display 110. In FIG. 6, the protrusion 130 is a plate-shaped portion (hereinafter also referred to as a plate) that protrudes from the lower end of the frame 120 in the direction toward the viewer. For example, the protruding portion 130 is located between the display surface 110A and the viewer V1 located in the viewing direction by a distance that is the sum of the distance Fd between the display surface 110A and the frame 120 and the width Td of the plate portion. will be arranged to create physical distancing. Note that the protruding portion 130 may include leg portions that support the plate portion.

FIG. 7 is a side view of a stereoscopic display device according to an embodiment of the present disclosure. In FIGS. 7 to 9, the maximum pop-out distance D and the distance Fd from the display surface 110A to the frame 120 in the viewing direction satisfy the following formula (1).

By satisfying the above formula (1), the frame 120 is placed in front of the maximum protrusion distance D.

Further, in FIG. 7 , the frame 120 is arranged so as to overlap the lower end of the stereoscopic display 110 among the outer edges of the stereoscopic display 110 . The distance Fh from the height of the lower end of the stereoscopic display 110 to the height of the upper end of the frame 120, the distance Fd in the viewing direction from the display surface 110A to the frame 120, and the viewpoint of the viewer located in the viewing direction from the display surface 110A. The viewing distance Z, which is the distance to the position in the viewing direction, and the distance h from the height of the lower end of the stereoscopic display 110 to the height of the viewer's viewpoint position satisfy the following formula (2).

By satisfying the above formula (2), the lower end of the stereoscopic display 110 is hidden from the viewer.

FIG. 8 is a plan view of a stereoscopic display device according to an embodiment of the present disclosure. In FIG. 8 , the frame 120 is arranged so as to overlap the right end of the stereoscopic display 110 among the outer edges of the stereoscopic display 110 . The distance Fr from the right end of the stereoscopic display 110 in the horizontal direction to the left end of the frame 120 in the horizontal direction, the distance Fd in the viewing direction from the display surface 110A to the frame 120, and the position in the viewing direction from the display surface 110A. The viewing distance Z, which is the distance in the viewing direction from the viewer's viewpoint to the viewer, and the distance w from the right end of the stereoscopic display 110 in the horizontal direction to the viewer's viewpoint in the horizontal direction are calculated using the following formula. (3) is satisfied.

By satisfying the above formula (3), the right end of the stereoscopic display 110 is hidden from the viewer.

Further, the frame 120 is arranged so as to overlap the left end of the stereoscopic display 110 among the outer edges of the stereoscopic display 110 . The distance Fl from the left end of the stereoscopic display 110 in the horizontal direction to the right end of the frame 120 in the horizontal direction, the distance Fd in the viewing direction from the display surface 110A to the frame 120, and the position in the viewing direction from the display surface 110A. the viewing distance Z, which is the distance in the viewing direction from the viewer's viewpoint to the viewer, the horizontal width W of the stereoscopic display 110, and the horizontal distance from the right end of the stereoscopic display 110 in the horizontal direction to the viewer's viewpoint. The distance w to the position in the direction satisfies the following formula (4).

By satisfying the above formula (4), the left end of the stereoscopic display 110 is hidden from the viewer.

Although not shown, the frame 120 may be arranged to overlap the upper end of the stereoscopic display 110 among the outer edges of the stereoscopic display 110. The distance Fu from the height of the upper end of the stereoscopic display 110 to the height of the lower end of the frame 120, the distance Fd in the viewing direction from the display surface 110A to the frame 120, and the viewpoint of the viewer located in the viewing direction from the display surface 110A. The viewing distance Z, which is the distance to the position in the viewing direction, the vertical width H of the stereoscopic display 110, and the distance h from the height of the lower end of the stereoscopic display 110 to the height of the viewer's viewpoint position are as follows. satisfies formula (5).

By satisfying the above formula (5), the upper end of the stereoscopic display 110 is hidden from the viewer.

FIG. 9 is a side view of a stereoscopic display device according to an embodiment of the present disclosure. In FIG. 9 , the stereoscopic display device 100 further includes a protrusion 130 . The distance Dd, which is the sum of the distance in the viewing direction from the display surface 110A to the protrusion 130 and the width of the protrusion 130 in the viewing direction, and the free space provided between the viewer located in the viewing direction and the protrusion 130. The width Dy and the viewing distance Z, which is the distance in the viewing direction from the display surface 110A to the viewpoint position of the viewer located in the viewing direction, satisfy the following formula (6).

The free space is a space provided between the protrusion 130 and the viewer. The free space may be, for example, a space (width of about 10 to 30 cm) that a person naturally secures when sitting at a desk. By satisfying the above formula (6), it is desirable that the sum of the protrusion 130 and the free space becomes the optimum viewing distance.

[3. Modified example]
The stereoscopic display device 100 according to the embodiment described above may be implemented in various different forms other than the embodiment described above. Therefore, other embodiments of the stereoscopic display device 100 will be described below. Note that the same parts as those in the embodiment are given the same reference numerals and the description thereof will be omitted.

[3-1. First modification]
In the above-described embodiment, a case has been described in which the frame 120 is arranged at three locations, the lower part, the left part, and the right part, where the frame 120 is likely to overlap the image frame of the stereoscopic display when a stereoscopic image is displayed in a pop-out manner. Not limited to. For example, depending on the stereoscopic image to be displayed, it is possible that the image will cover the upper image frame, so in that case, the frame 120 may be placed at the upper part. Further, in the case of content such as a human, the composition tends to be such that the human's torso extends downward, so the frame 120 may be placed only at the bottom, excluding the left and right sides.

[3-2. Second modification]
In the above-described embodiment, the frame 120 is arranged at three locations, that is, the lower part, the left part, and the right part, where the frame 120 is likely to overlap the image frame of the stereoscopic display when a stereoscopic image is displayed in a pop-up manner. The position and size of 120 may be dynamically controlled. For example, the position and size of the frame 120 may be dynamically controlled according to the viewer's viewpoint position or the display position of the stereoscopic image. For example, frame 120 may be mechanically operated. For example, the frame 120 may be mechanically operated, such as a sliding plate like an automatic door, an electric shutter, or a curtain. Further, the frame 120 may have a transmittance that is optically controlled. For example, the frame 120 may be made of a transparent liquid crystal display or a liquid crystal light control film as a material for optically controlling transmittance.

[3-3. Third modification]
In the embodiment described above, a case has been described in which the stereoscopic display device 100 displays a stereoscopic image generated in advance. However, content generation and shooting may be controlled so that the stereoscopic image is not displayed before the maximum pop-out distance D. Good too. For example, if the subject is the photographer himself, the shooting camera (for example, a stereo camera) and the pop-up depth can be seen on the shooting side so that the positional relationship between the viewer on the stereoscopic display side and the maximum pop-out distance D is the same. A physical barrier (such as an object such as a desk) may also be placed. This allows the photographer, who is the subject, to know the maximum protrusion depth on the stereoscopic display side, so he or she can be careful to operate within that range. For example, the physical barrier placed on the shooting side may have a desk-like shape or a partition-like shape. Also, instead of using a physical barrier, visualization may be performed using an optical laser or projector. It may be configured to use an invisible force such as wind or ultrasonic waves so that a tactile sensation is felt when the object exceeds the protrusion depth. Alternatively, a certain depth of the subject may be measured, and if the depth exceeds the depth, the photographer may be notified using sound or video.

[4. effect]
As described above, the stereoscopic display device 100 according to the embodiment or modification of the present disclosure includes the stereoscopic display 110 and the frame 120. The frame 120 is arranged to have an offset with respect to the display surface 110A in a viewing direction perpendicular to the display surface 110A of the stereoscopic display 110, and overlaps at least a portion of the outer edge of the stereoscopic display 110 when viewed from the viewing direction. The stereoscopic display 110 is arranged so as to block the image on the stereoscopic display 110.

As a result, the stereoscopic display device 100 can prevent the displayed stereoscopic image from appearing to the viewer as if it is covering the image frame of the stereoscopic display, thereby reducing parallax inconsistency and stereoscopic misalignment. You can prevent it from happening. Therefore, the stereoscopic display device 100 can resolve at least a portion of the parallax contradiction and stereoscopic misalignment. Furthermore, the stereoscopic display device 100 can enable viewers to comfortably view stereoscopic images.

Further, the maximum pop-out distance D, which is the distance set as the maximum distance in the viewing direction from the display surface 110A to the stereoscopic image, and the distance Fd in the viewing direction from the display surface 110A to the frame 120 are calculated using the following formula (1). Fulfill.

As a result, the stereoscopic display device 100 can prevent the displayed stereoscopic image from appearing to the viewer as if it is covering the image frame of the stereoscopic display, thereby reducing parallax inconsistency and stereoscopic misalignment. You can prevent it from happening. Therefore, the stereoscopic display device 100 can resolve at least a portion of the parallax contradiction and stereoscopic misalignment.

Further, the frame 120 is arranged to overlap the lower end of the stereoscopic display 110 among the outer edges of the stereoscopic display 110 . The distance Fh from the height of the lower end of the stereoscopic display 110 to the height of the upper end of the frame 120, the distance Fd in the viewing direction from the display surface 110A to the frame 120, and the viewpoint of the viewer located in the viewing direction from the display surface 110A. The viewing distance Z, which is the distance to the position in the viewing direction, and the distance h from the height of the lower end of the stereoscopic display 110 to the height of the viewer's viewpoint position satisfy the following formula (2).

As a result, the stereoscopic display device 100 can prevent the stereoscopic image displayed projecting from the bottom of the stereoscopic display from appearing to the viewer as covering the bottom edge of the image frame of the stereoscopic display. , it is possible to avoid causing parallax inconsistency or stereoscopic misalignment. Therefore, the stereoscopic display device 100 can resolve at least a portion of the parallax contradiction and stereoscopic misalignment.

Further, the frame 120 is arranged so as to overlap the right end of the stereoscopic display 110 among the outer edges of the stereoscopic display 110 . The distance Fr from the right end of the stereoscopic display 110 in the horizontal direction to the left end of the frame 120 in the horizontal direction, the distance Fd in the viewing direction from the display surface 110A to the frame 120, and the position in the viewing direction from the display surface 110A. The viewing distance Z, which is the distance in the viewing direction from the viewer's viewpoint to the viewer, and the distance w from the right end of the stereoscopic display 110 in the horizontal direction to the viewer's viewpoint in the horizontal direction are calculated using the following formula. (3) is satisfied.

As a result, the stereoscopic display device 100 can prevent the stereoscopic image displayed jumping out to the left of the stereoscopic display from appearing to the viewer as covering the left edge of the image frame of the stereoscopic display. It is possible to prevent parallax inconsistency and stereoscopic mismatch from occurring. Therefore, the stereoscopic display device 100 can resolve at least a portion of the parallax contradiction and stereoscopic misalignment.

Thereby, the stereoscopic display device 100 can prevent the stereoscopic image displayed jumping out to the right side of the stereoscopic display from appearing to the viewer as covering the right edge of the image frame of the stereoscopic display. It is possible to prevent parallax inconsistency and stereoscopic mismatch from occurring. Therefore, the stereoscopic display device 100 can resolve at least a portion of the parallax contradiction and stereoscopic misalignment.

Further, the frame 120 is disposed so as to overlap the upper end of the stereoscopic display 110 among the outer edges of the stereoscopic display 110 . The distance Fu from the height of the upper end of the stereoscopic display 110 to the height of the lower end of the frame 120, the distance Fd in the viewing direction from the display surface 110A to the frame 120, and the viewpoint of the viewer located in the viewing direction from the display surface 110A. The viewing distance Z, which is the distance to the position in the viewing direction, the vertical width H of the stereoscopic display 110, and the distance h from the height of the lower end of the stereoscopic display 110 to the height of the viewer's viewpoint position are as follows. satisfies formula (5).

As a result, the stereoscopic display device 100 can prevent the stereoscopic image displayed above the stereoscopic display from appearing to the viewer as if it is hanging over the top edge of the image frame of the stereoscopic display. It is possible to prevent parallax inconsistency and stereoscopic mismatch from occurring. Therefore, the stereoscopic display device 100 can resolve at least a portion of the parallax contradiction and stereoscopic misalignment.

The stereoscopic display device 100 further includes a protrusion 130 arranged to create a physical distance in the viewing direction between the display surface 110A and the viewer located in the viewing direction. The distance Dd, which is the sum of the distance in the viewing direction from the display surface 110A to the protrusion 130 and the width of the protrusion 130 in the viewing direction, and the free space provided between the viewer located in the viewing direction and the protrusion 130. The width Dy and the viewing distance Z, which is the distance in the viewing direction from the display surface 110A to the viewpoint position of the viewer located in the viewing direction, satisfy the following formula (6).

As a result, the stereoscopic display device 100 allows the viewer to view a stereoscopic image while maintaining the optimal viewing distance, so that the stereoscopic image may not be displayed due to crosstalk, convergence adjustment contradiction, or distortion in the image. It is possible to suppress quality deterioration in stereoscopic images such as unnaturalness, fatigue, or three-dimensional motion sickness. Therefore, the stereoscopic display device 100 can enable the viewer to comfortably view stereoscopic images.

Furthermore, the effects described in this specification are merely explanatory or illustrative, and are not limiting. In other words, the technology according to the present disclosure can have other effects that are obvious to those skilled in the art from the description of this specification, in addition to or in place of the above effects.

Note that the present technology can also have the following configuration.
(1)
a stereoscopic display;
Arranged so as to have an offset from the display surface in a viewing direction perpendicular to the display surface of the stereoscopic display, and arranged so as to overlap at least a portion of an outer edge of the stereoscopic display when viewed from the viewing direction. a frame that blocks an image of the stereoscopic display;
A stereoscopic display device comprising:
(2)
The maximum pop-out distance D, which is the distance set as the maximum distance in the viewing direction from the display surface to the stereoscopic image, and the distance Fd from the display surface to the frame in the viewing direction are calculated using the following formula (1). Fulfill,
The stereoscopic display device according to (1) above.

(3)
The frame is arranged to overlap a lower end of the stereoscopic display among the outer edges of the stereoscopic display,
A distance Fh from the height of the lower end of the stereoscopic display to the height of the upper end of the frame, a distance Fd from the display surface to the frame in the viewing direction, and a viewer located in the viewing direction from the display surface. The viewing distance Z, which is the distance in the viewing direction to the viewpoint position of , and the distance h from the height of the lower end of the stereoscopic display to the height of the viewer's viewpoint position satisfy the following formula (2)
The stereoscopic display device according to (2) above.

(4)
The frame is arranged so as to overlap a right end of the stereoscopic display among the outer edges of the stereoscopic display,
A distance Fr from the right end of the stereoscopic display in the horizontal direction to the left end of the frame in the horizontal direction, a distance Fd from the display surface to the frame in the viewing direction, and from the display surface to the viewing direction. The viewing distance Z is the distance in the viewing direction to the viewer's viewpoint located at , and the distance w from the right end of the stereoscopic display in the horizontal direction to the viewer's viewpoint in the horizontal direction is , satisfies the following formula (3),
The stereoscopic display device according to (2) or (3) above.

(5)
The frame is arranged so as to overlap the left end of the stereoscopic display among the outer edges of the stereoscopic display,
A distance Fl from the left end of the stereoscopic display in the horizontal direction to the right end of the frame in the horizontal direction, a distance Fd from the display surface to the frame in the viewing direction, and from the display surface to the viewing direction. viewing distance Z, which is the distance in the viewing direction to the viewpoint position of the viewer located at The distance w to the position of the viewpoint position in the horizontal direction satisfies the following formula (4),
The stereoscopic display device according to any one of (2) to (4) above.

(6)
The frame is arranged to overlap an upper edge of the stereoscopic display among the outer edges of the stereoscopic display,
a distance Fu from the height of the upper end of the stereoscopic display to the height of the lower end of the frame; a distance Fd from the display surface to the frame in the viewing direction; and a viewer located in the viewing direction from the display surface. viewing distance Z, which is the distance in the viewing direction to the viewpoint position of the viewer, the vertical width H of the stereoscopic display, and the distance from the height of the lower end of the stereoscopic display to the height of the viewer's viewpoint position. h satisfies the following formula (5),
The stereoscopic display device according to any one of (2) to (5) above.

(7)
further comprising a protrusion arranged to create a physical distance in the viewing direction between the display surface and the viewer located in the viewing direction,
A distance Dd that is a sum of the distance from the display surface to the protrusion in the viewing direction and the width of the protrusion in the viewing direction, and a distance Dd provided between the viewer located in the viewing direction and the protrusion. The width Dy of the free space and the viewing distance Z, which is the distance in the viewing direction from the display surface to the viewpoint position of the viewer located in the viewing direction, satisfy the following formula (6),
The stereoscopic display device according to any one of (1) to (6) above.

100 stereoscopic display device 110 stereoscopic display 120 frame 130 protrusion

Claims

a stereoscopic display;
Arranged so as to have an offset from the display surface in a viewing direction perpendicular to the display surface of the stereoscopic display, and arranged so as to overlap at least a portion of an outer edge of the stereoscopic display when viewed from the viewing direction. a frame that blocks an image of the stereoscopic display;
A stereoscopic display device comprising:
The maximum pop-out distance D, which is the distance set as the maximum distance in the viewing direction from the display surface to the stereoscopic image, and the distance Fd from the display surface to the frame in the viewing direction are calculated using the following formula (1). Fulfill,
The stereoscopic display device according to claim 1.
The frame is arranged to overlap a lower end of the stereoscopic display among the outer edges of the stereoscopic display,
A distance Fh from the height of the lower end of the stereoscopic display to the height of the upper end of the frame, a distance Fd from the display surface to the frame in the viewing direction, and a viewer located in the viewing direction from the display surface. The viewing distance Z, which is the distance in the viewing direction to the viewpoint position of , and the distance h from the height of the lower end of the stereoscopic display to the height of the viewer's viewpoint position satisfy the following formula (2)
The stereoscopic display device according to claim 2.
The frame is arranged so as to overlap a right end of the stereoscopic display among the outer edges of the stereoscopic display,
A distance Fr from the right end of the stereoscopic display in the horizontal direction to the left end of the frame in the horizontal direction, a distance Fd from the display surface to the frame in the viewing direction, and from the display surface to the viewing direction. The viewing distance Z is the distance in the viewing direction to the viewer's viewpoint located at , and the distance w from the right end of the stereoscopic display in the horizontal direction to the viewer's viewpoint in the horizontal direction is , satisfies the following formula (3),
The stereoscopic display device according to claim 2.
The frame is arranged so as to overlap the left end of the stereoscopic display among the outer edges of the stereoscopic display,
A distance Fl from the left end of the stereoscopic display in the horizontal direction to the right end of the frame in the horizontal direction, a distance Fd from the display surface to the frame in the viewing direction, and from the display surface to the viewing direction. viewing distance Z, which is the distance in the viewing direction to the viewpoint position of the viewer located at The distance w to the position of the viewpoint position in the horizontal direction satisfies the following formula (4),
The stereoscopic display device according to claim 2.
The frame is arranged to overlap an upper edge of the stereoscopic display among the outer edges of the stereoscopic display,
a distance Fu from the height of the upper end of the stereoscopic display to the height of the lower end of the frame; a distance Fd from the display surface to the frame in the viewing direction; and a viewer located in the viewing direction from the display surface. viewing distance Z, which is the distance in the viewing direction to the viewpoint position of the viewer, the vertical width H of the stereoscopic display, and the distance from the height of the lower end of the stereoscopic display to the height of the viewer's viewpoint position. h satisfies the following formula (5),
The stereoscopic display device according to claim 2.
further comprising a protrusion arranged to create a physical distance in the viewing direction between the display surface and the viewer located in the viewing direction,
A distance Dd that is a sum of the distance from the display surface to the protrusion in the viewing direction and the width of the protrusion in the viewing direction, and a distance Dd provided between the viewer located in the viewing direction and the protrusion. The width Dy of the free space and the viewing distance Z, which is the distance in the viewing direction from the display surface to the viewpoint position of the viewer located in the viewing direction, satisfy the following formula (6),
The stereoscopic display device according to claim 1.